GayIncestuousMasturbation. It is gay because it is the same sex, it is incest because it is the same blood, and it is masturbation because it is your own body. There are only two known ways to ginsterbate: (1) Cloning yourself and having relations with it or (2) traveling time and having relations with yourself.
Identical twins cannot ginsterbate. They could have gincestuous relations but Jim and John are two different people.

a)I look forward to ginsterbation because I can experience my own love.
b)I cloned myself and ginsterbated so I could see my own O-face.